|
|
Número de pieza | CXA2108AQ | |
Descripción | Constant-Current Driver for Full Color LED Display | |
Fabricantes | Sony Corporation | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CXA2108AQ (archivo pdf) en la parte inferior de esta página. Total 27 Páginas | ||
No Preview Available ! CXA2108AQ
Constant-Current Driver for Full Color LED Display
Description
The CXA2108AQ is a 1,024-gradation LED driver
which is ideal for full color LED displays. This IC has
24 outputs and a maximum output current of 70mA.
Time division allows driving of either two or six LEDs
per output by connecting an external FET or other
switch. The luminance (PWM) and drive current for
each LED are set using the internal RAM. The LED
type is common anode.
80 pin QFP (Plastic)
Features
• 24 outputs: 10-bit (1,024-gradation) PWM current outputs
• Maximum output current: 70mA
• LED type: Common anode
• 4-bit brightness function capable of switching the basic PWM pulse width in 16 steps
• Time division allows driving of up to six LEDs with a single output, making it possible to configure a high
definition display with few driver ICs.
• Coarse Adj. (2 bits) and Fine Adj. (8 bits) output current adjustment for each LED makes it possible to drive
R, G and B using the same output from the same IC. In addition, the characteristics variance of each LED
can also be corrected.
• All luminance (PWM) data and drive current data are set by writing to the internal RAM.
• PWM emitting can be performed up to 15 times per frame to realize a screen with little flicker.
• Two built-in PWM data RAM make it possible to set the next luminance data even during PWM operation.
• Abnormal internal temperature detection circuit
• Single 5V power supply
• Current output with protection diode (diode cathode voltage: VPD can be supplied independently of the 5V
power supply.)
• Surface mounting package (80-pin QFP)
Applications
LED display panels
Structure
Bi-CMOS silicon monolithic IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
AVCC, DVCC
VPD
• Digital input voltage
VI_D
• Digital output current
Io_D
• Driver output voltage
V_DVR
• Driver output current
• Operating temperature∗1
I_DVR
Topr
• Storage temperature
Tstg
• Allowable power dissipation∗1 (Ta = 65°C or less) PD
–0.3 to +6.0
–0.3 to +10.5
–0.3 to DVCC + 0.3
–5.0 to +5.0
0 to VPD + 0.3
–1 to +80
–40 to +80
–65 to +150
1.5
V
V
V
mA
V
mA
°C
°C
W
Recommended Operating Range
• Supply voltage
• Driver output compliance voltage
• Operating temperature (ambient temperature)∗1
• Operating temperature (case temperature)∗1
∗1 When mounted on a printed circuit board
AVCC, DVCC
VPD
Vcmp
Ta
Tc
4.75 to 5.25
AVCC to 10
1.0 to VPD + 0.3
(I_DVR = 0 to 70mA)
–20 to +65
–20 to +110
V
V
V
°C
°C
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E99160-PS
1 page Pin
No.
Reference
Symbol I/O voltage
level
47 XCS
I CMOS
50 XR/W I CMOS
48 XWR
I CMOS
49 XRD
I CMOS
46 DLDI
I CMOS
10 VPD
— 5V (Typ.)
CXA2108AQ
Equivalent circuit
DVCC
46 47 48
49 50
DGND
Description
Internal RAM chip select.
Internal RAM access is enabled by
inputting low level. (See Table 1.
Read/Write Switching Condition
Correspondence Table.)
Internal RAM read/write select.
Write mode is selected for high level, and
read mode for low level. See Table 1.
Read/Write Switching Condition
Correspondence Table for the actual
read/write switching signal input conditions.
Write clock input.
This pin is used to input the clock for
writing the luminance, brightness and
drive current data. It is not
synchronized with CLK.
Read clock input.
This pin is used to input the clock for
externally reading the luminance,
brightness and drive current data. It is
not synchronized with CLK.
Trigger signal input for luminance data
RAM (A)/(B) switching and PWM
output start.
(See the Timing Charts.)
Voltage supply terminal for cathode of
positive protection diode which
connected to drivers (IOUTO to
IOUT23) and REXT (55pin).
Normally,connect to LED DC supply.
However ,when the LED DC supply
voltage exceeds 10V,VPD must be set
10V or less.
–5–
5 Page Electrical Characteristics Measurement Circuit
DC Characteristics Measurement Circuit
5V 10V
CXA2108AQ
Logic Tester
5V
0V 15MHz
XRST
MODE
XR/W
IOUT0 to 23
A 1V
XRD
XWR
10 DLDI CXA2108AQ
10 A0 to 9
D0 to 9
XCS
CLK
2kΩ
– 11 –
11 Page |
Páginas | Total 27 Páginas | |
PDF Descargar | [ Datasheet CXA2108AQ.PDF ] |
Número de pieza | Descripción | Fabricantes |
CXA2108AQ | Constant-Current Driver for Full Color LED Display | Sony Corporation |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |